42505411450511 has 2 divisors, whose sum is σ = 42505411450512. Its totient is φ = 42505411450510.

The previous prime is 42505411450483. The next prime is 42505411450571. The reversal of 42505411450511 is 11505411450524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42505411450511 - 2³⁰ = 42504337708687 is a prime.

It is a super-2 number, since 2×42505411450511² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42505411450571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21252705725255 + 21252705725256.

It is an arithmetic number, because the mean of its divisors is an integer number (21252705725256).

Almost surely, 2^{42505411450511} is an apocalyptic number.

42505411450511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42505411450511 is an equidigital number, since it uses as much as digits as its factorization.

42505411450511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80000, while the sum is 38.

The spelling of 42505411450511 in words is "forty-two trillion, five hundred five billion, four hundred eleven million, four hundred fifty thousand, five hundred eleven".